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不同锚杆锚固方式洞室抗爆性能分析

Coal Mining Technology(2015)

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Abstract
锚杆根部加强和普通长密锚杆加固洞室抗爆性能对比试验结果表明,在爆炸条件下,锚杆根部加强加固洞室拱顶与底板发生相背位移,普通长密锚杆加固洞室拱顶与底板发生相向位移,尽管锚杆根部加强洞室的位移峰值较大,由于其塑性变形能力得到提高,塑性变形消耗的爆炸能量增大,其最终破坏程度较轻。在爆炸荷载作用下,锚杆根部加强加固洞室抗爆效果要优于普通长密锚杆加固洞室的抗爆效果。
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